The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2003
Filed:
Jan. 24, 2002
Hiroyuki Nanba, Kanagawa-ken, JP;
Koji Yamamoto, Kanagawa-ken, JP;
Mitsubishi Gas Chemical Co., Inc., Tokyo, JP;
Abstract
A stretched polyamide film obtained by melt-kneading and extruding a mixed resin (Z) containing a polyamide resin (X) and a modified resin (Y) into a film followed by biaxial stretching, wherein the polyamide resin (X) is obtained from a diamine component containing not less than 70 mol % of a metaxylylenediamine and from a dicarboxylic acid component containing not less than 70 mol % of an &agr;, &ohgr;-aliphatic dicarboxylic acid having 6 to 12 carbon atoms; the modified resin (Y) is obtained by graft-modifying an ethylene-ethyl acrylate copolymer resin with a maleic anhydride; and the mixed resin (Z) contains from 80 to 99% by weight of the polyamide and from 20 to 1% by weight of the modified resin. The stretched film exhibits not only excellent transparency and gas-barring property but also excellent flexibility and shock resistance.